2026 NPPES data Physician Assistant NPI 1144792656 PA-C
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CASSIE BUCHAN, PA-C

Physician Assistant in MYRTLE BEACH, South Carolina. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
916
Medicare Part D claims · 363 beneficiaries · Physician Assistant avg: 790
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
88.9982/100
▲ 6 pts above national avg 83.1 · [object Object]
Industry payments
$1.7K
93 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: CASSIE BUCHAN, PA-C is a Physician Assistant ([object Object]) practicing in MYRTLE BEACH, South Carolina with a Medicare Part D prescribing footprint of 916 claims across 363 beneficiaries — 7% brand-name prescribing . Their CMS MIPS Final Score of 88.9982/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $1.7K across 93 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: CASSIE BUCHAN, PA-C reported a CMS MIPS final score of 88.9982 out of 100, above the 83.1 national average, and filed 916 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

CASSIE BUCHAN, PA-C at a glance

High performer (top quartile)

NPI registry status

Active

Issued 12/21/2018

NPI 1144792656

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

916 16% vs specialty avg

2023 prescription claims

Specialty avg: 790

MIPS final score

88.9982/100 5.898200000000003% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in South Carolina

How Physician Assistant compares to other specialties among South Carolina providers

South Carolina providers

Physician Assistant share within South Carolina

1. Physician Assistant42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Physician Assistant share within South Carolina

Medicare quality performance — MIPS

CASSIE BUCHAN, PA-C's 2023 MIPS final score plotted against the Physician Assistant national average

High performer (top quartile)
MIPS Final Score
88.9982/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Physician Assistant) — 88.9982/100 vs national avg 83.1

0%100%National avg83%89%
MIPS final score (Physician Assistant) — 88.9982/100 vs national avg 83.1

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

CASSIE BUCHAN, PA-C is a Physician Assistant provider practicing in MYRTLE BEACH, South Carolina, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: PA-C. NPI: 1144792656. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

CASSIE BUCHAN, PA-C appears in the CMS NPPES registry as a Physician Assistant provider holding PA-C credentials at 7410 HIGHWAY 707, MYRTLE BEACH, SC, 29588, with a listed phone of (843) 215-1100. NPI 1144792656 was issued on 12/21/2018. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BUCHAN most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 916 prescription claims written by this provider, covering 363 Medicare beneficiaries and totaling roughly $274K in drug spend, split 7% brand-name and 93% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 88.9982/100 for the 2023 performance year (Quality 75.1638, Cost 96.4421), compared with the national average of 83.1.

Physician Assistant is a high-volume specialty nationwide, with 149,975 enrolled providers across 56 states and an average of 790 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

7410 HIGHWAY 707
MYRTLE BEACH, SC 29588

Provider Details

NPI 1144792656
Specialty Physician Assistant
Credentials PA-C
Gender Female
NPI Issued 12/21/2018

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

88.9982
Final Score
Avg: 83.1
75.1638
Quality
96.4421
Cost

Reporting: Group practice

Hospital and facility affiliations

Facilities where CASSIE BUCHAN, PA-C bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

GRAND STRAND DERMATOLOGY
MYRTLE BEACH, SC

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for CASSIE BUCHAN, PA-C. Source: openpaymentsdata.cms.gov.

Total received

$1.7K

Largest payer

Janssen Biotech, Inc.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Generic-heavy

CASSIE BUCHAN, PA-C — brand share 7.0%
Specialty average (est.)

7% brand-name claims vs 93% generic, on 916 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

916
Total Claims
$274K
Total Drug Cost
363
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
968
Total Day Supply
22,819
Brand vs Generic
7% brand / 93% generic
Brand Drug Cost
$251K
Generic Drug Cost
$24K
Antibiotic Claims
105

Patient Demographics

Average Patient Age
72.8 years
Avg HCC Risk Score
1.03
Gender Split
57% female / 43% male
Age Distribution
<65: 25, 65-74: 199, 75-84: 112, 85+: 27

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Ketoconazole
213
Mupirocin
100
Triamcinolone Acetonide
82
Betamethasone Diprop Augmented
Betamethasone/Propylene Glyc
69
Fluorouracil
48
Fluocinonide
41
Cephalexin
35
Clindamycin Phosphate
32
Doxycycline Hyclate
30
Doxycycline Monohydrate
29

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Physician Assistant Overview

How CASSIE BUCHAN, PA-C fits within the Physician Assistant landscape nationally.

149,975
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider

CASSIE BUCHAN, PA-C's 916 claims are above the specialty average of 790.

Nearby Physician Assistant Providers in South Carolina

Other clinicians with the same primary specialty enrolled in South Carolina, drawn from the same CMS NPPES roster as BUCHAN.

Compare Physician Assistant nationally: see state-by-state distribution →

Frequently Asked Questions

What is CASSIE BUCHAN, PA-C's specialty?
CASSIE BUCHAN, PA-C specializes in Physician Assistant and practices in MYRTLE BEACH, South Carolina. Credentials: PA-C.
How much does CASSIE BUCHAN, PA-C prescribe under Medicare Part D?
In 2023, CASSIE BUCHAN, PA-C wrote 916 Medicare Part D claims totaling $274K in drug costs for 363 beneficiaries.
What is CASSIE BUCHAN, PA-C's Medicare quality score?
CASSIE BUCHAN, PA-C has a CMS MIPS Final Score of 88.9982/100 (Quality: 75.1638, Cost: 96.4421). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is CASSIE BUCHAN, PA-C located?
CASSIE BUCHAN, PA-C is located at 7410 HIGHWAY 707, MYRTLE BEACH, SC, 29588. Phone: (843) 215-1100.
What is CASSIE BUCHAN, PA-C's NPI number?
CASSIE BUCHAN, PA-C's National Provider Identifier (NPI) is 1144792656, issued on 12/21/2018.
Does CASSIE BUCHAN, PA-C prescribe more brand-name or generic drugs?
CASSIE BUCHAN, PA-C's prescribing is 7% brand-name and 93% generic drugs by claim count, with $251K in brand drug costs.
How many Physician Assistant providers are there in the US?
There are 149,975 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does CASSIE BUCHAN, PA-C prescribe most often?
Based on 2023 Medicare Part D data, CASSIE BUCHAN, PA-C's most frequently prescribed drugs include Ketoconazole, Mupirocin, Triamcinolone Acetonide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CASSIE BUCHAN, PA-C accept Medicare?
CASSIE BUCHAN, PA-C appears in CMS Medicare data with 916 Part D claims and 363 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CASSIE BUCHAN, PA-C's credentials?
CASSIE BUCHAN, PA-C's NPI is 1144792656 with credentials PA-C. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology